[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/hd-85622-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki24\/hd-85622-wikipedia\/","headline":"HD 85622 – Wikipedia","name":"HD 85622 – Wikipedia","description":"before-content-x4 From Wikipedia, the free encyclopedia after-content-x4 Binary star system in the constellation Vela This article is about m Velorum.","datePublished":"2020-05-13","dateModified":"2020-05-13","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","url":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","height":"1","width":"1"},"url":"https:\/\/wiki.edu.vn\/en\/wiki24\/hd-85622-wikipedia\/","about":["Wiki"],"wordCount":2905,"articleBody":"     (adsbygoogle = window.adsbygoogle || []).push({});before-content-x4From Wikipedia, the free encyclopedia       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4Binary star system in the constellation VelaThis article is about m Velorum. For M Velorum, see HD 83446.HD 85622 is a binary star system in the southern constellation of Vela. It is visible to the naked eye with an apparent visual magnitude of 4.58.[2] The distance to HD 85622 can be estimated from its annual parallax shift of 4.3\u00a0mas,[1] yielding a value of 750\u00a0light years. It is moving further from the Earth with a heliocentric radial velocity of +8\u00a0km\/s.[6]       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4This is a single-lined spectroscopic binary with a circular orbit and a period of 329.3\u00a0days. The a sin i value is 0.39\u00a0AU, where a is the semimajor axis and i is the orbital inclination to the line of sight.[3] This value provides a lower bound on the actual semimajor axis. The system shows a micro-variability in its brightness,[3] and is a source of X-ray emission with an apparent flux of 42.6\u00d710\u221217\u00a0W\/m2.[10]The visible component is a supergiant star with a stellar classification of G5\u00a0Ib[3] or G6\u00a0IIa.[4] It is about 64[7]\u00a0million years old with a projected rotational velocity of 19\u00a0km\/s.[5] The star has 6.2[7] times the mass of the Sun and is radiating 1,908[8] times the Sun’s luminosity from its photosphere at an effective temperature of 4,796\u00a0K.[8]References[edit]^ a b c d e f Brown, A. G. A.;  et\u00a0al. (Gaia collaboration) (August 2018). “Gaia Data Release 2: Summary of the contents and survey properties”. Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A…616A…1G. doi:10.1051\/0004-6361\/201833051. Gaia DR2 record for this source at VizieR.^ a b c Anderson, E.; Francis, Ch. (2012), “XHIP: An extended hipparcos compilation”, Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL…38..331A, doi:10.1134\/S1063773712050015, S2CID\u00a0119257644.^ a b c d e f Hearnshaw, J. B.; Komonjinda, Siramas; Skuljan, J.; Kilmartin, P. M. (November 2012), “A study of non-Keplerian velocities in observations of spectroscopic binary stars”, Monthly Notices of the Royal Astronomical Society, 427 (1): 298\u2013310, arXiv:1211.5527, Bibcode:2012MNRAS.427..298H, doi:10.1111\/j.1365-2966.2012.21802.x, S2CID\u00a0118368473^ a b Keenan, Philip C.; McNeil, Raymond C. (1989), “The Perkins catalog of revised MK types for the cooler stars”, Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS…71..245K, doi:10.1086\/191373^ a b c De Medeiros, J. R.; Udry, S.; Burki, G.; Mayor, M. (2002), “A catalog of rotational and radial velocities for evolved stars. II. Ib supergiant stars”, Astronomy and Astrophysics, 395: 97\u201398, Bibcode:2002A&A…395…97D, doi:10.1051\/0004-6361:20021214.^ a b de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), “Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project”, Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A…546A..61D, doi:10.1051\/0004-6361\/201219219, S2CID\u00a059451347, A61.^ a b c d Tetzlaff, N.;  et\u00a0al. (January 2011), “A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun”, Monthly Notices of the Royal Astronomical Society, 410 (1): 190\u2013200, arXiv:1007.4883, Bibcode:2011MNRAS.410..190T, doi:10.1111\/j.1365-2966.2010.17434.x, S2CID\u00a0118629873.^ a b c d McDonald, I.;  et\u00a0al. (2012), “Fundamental parameters and infrared excesses of Hipparcos stars”, Monthly Notices of the Royal Astronomical Society, 427 (1): 343\u2013357, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111\/j.1365-2966.2012.21873.x, S2CID\u00a0118665352.^ “HD 85622”. SIMBAD. Centre de donn\u00e9es astronomiques de Strasbourg. Retrieved 2018-08-08.^ Hunsch, M.;  et\u00a0al. (January 1998), “The ROSAT all-sky survey catalogue of optically bright late-type giants and supergiants”, Astronomy and Astrophysics Supplement, 127 (2): 251\u2013255, Bibcode:1998A&AS..127..251H, doi:10.1051\/aas:1998347.       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